trae@cr01b-vyos# set pki ca IPA.TRAE32566.ORG system-install 
[edit]
trae@cr01b-vyos# commit
Archiving config...
  sftp://stor01a-rh9.int.trae32566.org/int/cr01b-vyos [edit]
trae@cr01b-vyos# run restart ntp
[edit]
trae@cr01b-vyos# run show ntp sources
.-- Source mode  '^' = server, '=' = peer, '#' = local clock.
 / .- Source state '*' = current best, '+' = combined, '-' = not combined,
| /             'x' = may be in error, '~' = too variable, '?' = unusable.
||                                                 .- xxxx [ yyyy ] +/- zzzz
||      Reachability register (octal) -.           |  xxxx = adjusted offset,
||      Log2(Polling interval) --.      |          |  yyyy = measured offset,
||                                \     |          |  zzzz = estimated error.
||                                 |    |           \
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* ns02.ac.trae32566.org         2   6     7     0     +2ns[ -188ms] +/- 5513us
^- ns01.ac.trae32566.org         2   6     7     0   +120us[ -188ms] +/- 5598us

conf
set service monitoring network-event event addr
set service monitoring network-event event link
set service monitoring network-event event neigh
set service monitoring network-event event route
set service monitoring network-event event rule
commit

vyos@vyos:~$ sudo ip link set down dev eth1
vyos@vyos:~$ sudo ip link set up dev eth1
vyos@vyos:~$ show interfaces ethernet eth1 event-log link 
Dec 03 09:30:09 vyos-network-event-logger[21158]: [LINK]   3: eth1:  <BROADCAST,MULTICAST>  mtu 1500  qdisc fq_codel  state DOWN  group 0  link/ether 0c:89:0a:2e:00:01  brd ff:ff:ff:ff:ff:ff  [altname enp0s4] [altname ens4]
Dec 03 09:30:14 vyos-network-event-logger[21158]: [LINK]   3: eth1:  <BROADCAST,MULTICAST,UP,LOWER_UP>  mtu 1500  qdisc fq_codel  state UP  group 0  link/ether 0c:89:0a:2e:00:01  brd ff:ff:ff:ff:ff:ff  [altname enp0s4] [altname ens4]